Flow Bench?

[Brian Knowles]

Bob McKnight posted:

>JC whitney has a nice 4 tube setup for balancing Motorcycle carbs.  I 
>think they use mercury (included).  Seems it was in the $40 area.  I 
>ordered one for a set of Webers which got stolen.  Its still in the 
>box in the shop - I hope.

Anybody who buys a set of mercury manometers needs to check the condition 
of the mercury BEFORE installing it.  I've seen these things lay around 
in the storeso long that the mercury starts to oxidise, forms a dull scum 
on the surface of the metal.  If this scum-covered mercury is then 
installed, the scum plates out on the guage portion of the manometer, 
rendering it useless ('cause you can't read it anymore).  If the mercury 
isn't bright and shiney, absolutly mirror-like, insist on a replacement.

Yes, it can be cleaned, but if your buying a new unit, you shouldn't have 
to start by fixing it.  Unless its made by GM, in which case that would 
be normal ;-)

Brian